Abstract
The ADS targets under consideration were box-shaped volumes of molten lead, molten lead-bismuth eutectic (LBE), and rodlets of UO2 and ThO2 cooled by LBE. The calculations were performed using MCNPX and MCNP6.1 simulation software. The parameters of interest were neutron fluxes and spectra in the forward direction, and heat deposition rates into the coolant, since they determine the performance of the ADS target to efficiently drive a subcritical core and the target cooling requirements. The performance of molten lead and LBE was found to be identical, and LBE was chosen as coolant for other calculations due to its lower melting point. Optimal dimensions of the target were established for Pb and LBE. Then we studied the impact of adding UO2 and ThO2 rodlets. The rodlet radial dimensions and compositions match established fast reactor fuel pins. Optimal rodlet spacing and the number of rodlet layers were studied. Overall circa 100 different configurations were investigated.
| Original language | English |
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| Title of host publication | 12th International Topical Meeting on Nuclear Applications of Accelerators 2015, AccApp 2015 |
| Publisher | American Nuclear Society |
| Pages | 485-489 |
| Number of pages | 5 |
| ISBN (Electronic) | 9781510842205 |
| State | Published - 2015 |
| Event | 12th International Topical Meeting on Nuclear Applications of Accelerators 2015, AccApp 2015 - Washington, United States Duration: Nov 10 2015 → Nov 13 2015 |
Publication series
| Name | 12th International Topical Meeting on Nuclear Applications of Accelerators 2015, AccApp 2015 |
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Conference
| Conference | 12th International Topical Meeting on Nuclear Applications of Accelerators 2015, AccApp 2015 |
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| Country/Territory | United States |
| City | Washington |
| Period | 11/10/15 → 11/13/15 |
Funding
This research was supported through the Organized Research Unit program of the University of Tennessee Office of Research and Engagement.
Keywords
- ADS
- Spallation